c++ - Arguments in function -


i new c++ student , trying make basic program kids learn basic math. work in progress of code not done. trying compile have done far , getting error says: 47 59 [error] new declaration 'void add(int, int, std::string, char)' , 18 5[error] ambiguates old declaration 'int add(int, int, std::string, char)'

#include <iostream> #include <iomanip> #include <time.h> #include <string> #include <cstdlib> #define over2  "\t\t" #define over3  "\t\t\t" #define over4  "\t\t\t\t" #define down5  "\n\n\n\n\n" #define down8  "\n\n\n\n\n\n\n\n" #define down10 "\n\n\n\n\n\n\n\n\n\n" #define down12 "\n\n\n\n\n\n\n\n\n\n\n\n"  using namespace std;  int add(int,int,string,char); int sub(); int multi(); int div();  int main(int argc, char** argv)    {     int num1, num2;      unsigned seed = time(0);     srand(seed);     num1 = 1 +rand() % 4;        num2 = 1 +rand() % 4;    //  correctanswer = (num1+num2);       cout << "this program tool young kids learn basic math.\n";     cout << "just press key , learning commence!\n";      system("cls");      add(num1, num2, "addition", '+'); //  addresults(num1+num2);      return 0; }  void add(int num1, int num2, string operation, char symbol) {     cout << down8;     cout << over3 << operation << endl;     cout << over3 << "________\n";     cout << over3 << setw(3) << num1 << endl;     cout << over3 << symbol << endl;     cout << over3 << setw(3) << num2 << endl;     cout << over3 << "________\n";   }

the return types of add method differ in declaration (int) , in definition (void). think definition's type should changed int , make return result.


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